-------------------------------------------------------------------------------
-- Spine Runtimes Software License
-- Version 2.1
-- 
-- Copyright (c) 2013, Esoteric Software
-- All rights reserved.
-- 
-- You are granted a perpetual, non-exclusive, non-sublicensable and
-- non-transferable license to install, execute and perform the Spine Runtimes
-- Software (the "Software") solely for internal use. Without the written
-- permission of Esoteric Software (typically granted by licensing Spine), you
-- may not (a) modify, translate, adapt or otherwise create derivative works,
-- improvements of the Software or develop new applications using the Software
-- or (b) remove, delete, alter or obscure any trademarks or any copyright,
-- trademark, patent or other intellectual property or proprietary rights
-- notices on or in the Software, including any copy thereof. Redistributions
-- in binary or source form must include this license and terms.
-- 
-- THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
-- IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
-- EVENT SHALL ESOTERIC SOFTARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-- OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-------------------------------------------------------------------------------

local SkeletonData = {}
function SkeletonData.new ()
	local self = {
		bones = {},
		slots = {},
		slotNameIndices = {},
		skins = {},
		events = {},
		animations = {},
		defaultSkin = nil
	}

	function self:findBone (boneName)
		if not boneName then error("boneName cannot be nil.", 2) end
		for i,bone in ipairs(self.bones) do
			if bone.name == boneName then return bone end
		end
		return nil
	end

	function self:findBoneIndex (boneName)
		if not boneName then error("boneName cannot be nil.", 2) end
		for i,bone in ipairs(self.bones) do
			if bone.name == boneName then return i end
		end
		return -1
	end

	function self:findSlot (slotName)
		if not slotName then error("slotName cannot be nil.", 2) end
		for i,slot in ipairs(self.slots) do
			if slot.name == slotName then return slot end
		end
		return nil
	end

	function self:findSlotIndex (slotName)
		if not slotName then error("slotName cannot be nil.", 2) end
		return self.slotNameIndices[slotName] or -1
	end

	function self:findSkin (skinName)
		if not skinName then error("skinName cannot be nil.", 2) end
		for i,skin in ipairs(self.skins) do
			if skin.name == skinName then return skin end
		end
		return nil
	end

	function self:findEvent (eventName)
		if not eventName then error("eventName cannot be nil.", 2) end
		for i,event in ipairs(self.events) do
			if event.name == eventName then return event end
		end
		return nil
	end

	function self:findAnimation (animationName)
		if not animationName then error("animationName cannot be nil.", 2) end
		for i,animation in ipairs(self.animations) do
			if animation.name == animationName then return animation end
		end
		return nil
	end

	return self
end
return SkeletonData
